Improvement in machines for corrugating- metal



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RICH-ARD MONTGOMERY, oFNEIwy'oRK,- N. Y.-

Letters Patent No. 85,262

, dated'Dcccmber 22, 1868.

To all whom it rml/y'eomzermr Be it 4known that I, .RICHARD MONTGOMERY, of the city, county, and State of New York, have invented a new and useful Improvement in-Rolls for the Manufacture of Gorrugated-lietal Beams; and I do hereby declare the following to be a full and exact description thereof, reference being had to the accompanying drawings, forming. a part of this specification, in which Figure l represents a longitudinal central section of my improved rolls, and v lFigure 2, a transverse section in the line a: xof iig. 1. rllhe nature of Amy invention consists in the combination of threesuperimposed, grooved, and hanged rolls, for the purpose of manufacturing thereby corrugatedmetal beams directly from the pile or bloom, said rollsbeing so arranged and-disposed, one upon the other, with reference to their grooves and flanges, as that the iron may be passed consecutively between the rolls, in opposite directions, thereby avoiding the loss of time and disadvantages attendant upon the use of the double rolls heretofore employed for this purpose, in which' there are constant interruptions in the process of rolling, caused by the necessity of returning the bar, after each pass, vto the front ofthe apparatus.

In'the accompanying drawings'- A, B, and C represent the solid metallic rolls lof my improved apparatus, having suitable journals ateach Vend thereof, revolving in bearings formed in a strong thereto, in the upper roll A, and the united depth of the two is such as that the square metal pile or bloom to be rolled, when passed through the aperture 1, left thereby between the rolls as they revolve in contact,

l will be somewhat lengthened, and'shaped 4into a bar.

The bottoms of the grooves c c1, in the upper and central rolls A and B, are slightly furrowed in an opposite manner, so that one shall ,be the counterpart of the other, as illustrated in the drawing, and produce a slight corrugation of the bar S, passed through theaperture, No. l, between them.

A double groove, b, No. 2, is next cut on the central roll B, so as to leave between its channels a projecting iiange. The space enclosed between the outer edges of the double groove equals the width of the bar to be rolled.

A counterpart recessb, of the same width, is cut inv theopposite face of thelower roll C, with two 'flanges- 'the1en, to correspond with lthe opposite channels of the double groove b, 2, in the roll B.

At the next point, No. 3, in the circumference of the roll B, double iianges, c, are Yformed to project into a counterpart double-grooved recess, c, cut in the upper roll A, said recess being of the same width as the beam S, to be formed in passing through the aperture 3.

Following this arrangement of counterpartgrooved aud flanged spaces formed around the rolls, the series of forming-apertures obtained thereby between `the rolls is completed .by double. grooves, dif, cut in the roll B, receiving double tlanges d* f on the roll (l, alternatingwith a double ilange, e, 5, on roll B, projecting between double grooves e, on the roll A.

The metal pile, extendedintof a slightly-furrowedor corrugated bar, in passing between the rolls A B, through the aperture No. 1, left by the recesses a al, is yet more deeply flu-rowed on opposite sides, in alternate parallel elevations and depressions or corrugations, by being passed through fthe apertxlre No. 2, left between the rolls B and() by the grooves b b. 'It is still further reduced in thickness when passed through the furrowed or grooved and iiang'ed aperture, No. 3, lbetween Athe rolls A vand B, at c, and to very nearly the thickness required in ,the finished beam in passing through the aperture N o. 4, between the rolls B and G again, and its folds or corrugations are nally gradually shaped and straightened-and made parallel and uniform, bypassing it thereafter successively between the rolls A B and B O, through the apertures or spaces 5 and 6, as indicated in the drawings.

The intervals 'm m, between the series of grooves and flanges a, b, c, Ste., at the points 1, 2, 3, 4, 85e., onI

the central roll B, are deeply grcoved circumferentially, with recesses having an angular section, and corresponding angular anges, fm, projecting both from the upper and lower rolls Aand C, fit into,and engage closely therewith, preventing longitudinal displacement or movement of the rolls A B O, and intimately combining them.

. In using this combination of triple rolls A, B, and C, wherein the upper and lower rolls A and C alternately present counterpart forming-spaces coincidently with those formed consecutively upon the central roll B, they pile of metal passed through from one side, between the rolls A B, at l, (in the direction indicated by the arrows at y, fig. 2,) and thereby partially rolled, is immediately returned, between the rolls B C, at 2 fig'. 1, (in the direction indicated by the arrows atz, fig. 2,) which continues the reduction and formation of the bar as desired,

and then again passed to the other side, between the i,

rolls A and B, lat 3, to be againl returned,between B and G,at 4, passed back, between A B, at 5,'and finally returned, between B C, at 6, in its finished form, each successive pass from 1 to 6 causing it to approximate more closely, in size and shape, to the inished bar, de-

livered orn between the rolls B C, at 6. p

The series or Iorming-apert-ures l to 6, between the rolls, may be diminished or increased in number, as a smaller, thinner bar requires fewer passes, anda thick, heavy `bar more passes, than the number herein enumerated.

By returning the heateddiar S from side to side, between the rolls, Without delay, as herein set forth, its

conversion into a corrugated beam is effected in about one-half of the time required with the old forms of pparatus, containing two rolls only. Hence, longer bars `may be rolled in the same time, or, as the bar may be finished in so rnnch less time, and can be, consequently,

entirely formed and finished at a much higher degree of heat, cheaper iron may be used, o r thinner bars manufactured. Itis evident, also, that with my triple rolls a.' much more perfect and intimate weld and union of the metallic particles will be produced in the beam,

for the purpose specified. Y

R. MONTGOMERY.

Witnesses:

DAVID A. BURR, DAVID. S. LEAVITT. 

